DOI: 10.31127/tuje.1515479 ISSN: 2587-1366

Application of green synthesized Nano silica in electrochemical sensor for the detection of Water contaminants, constituents in Food dye and presence of medicine in human blood/urine sample – A Review

Sampurna Santra, Deepshikha Datta, Bimal Das
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Electrochemical sensors are currently at the forefront of research and development due to their user-friendly operation, ability to detect analytes directly, compact design, high sensitivity, exceptional selectivity, and rapid response times. These attributes make them highly versatile across diverse fields such as clinical diagnostics, food quality assessment, and environmental monitoring for pollutant detection. One of the standout features of electrochemical sensors is their cost-effectiveness, especially when utilizing recycled agricultural waste materials for sensor fabrication. This review paper focuses on the green synthesis of nano-silica as a modifier in electrochemical sensors. Nano-silica, derived from agricultural waste, serves as an environmentally friendly material that significantly enhances sensor performance. It plays a critical role in improving sensitivity and selectivity, enabling the detection of water pollutants, various food dyes in different food samples, and diverse drugs in human urine or blood samples. The integration of nano-silica as a sensor modifier offers several advantages. It increases the effective surface area of the electrode, enhances electron transfer kinetics, and improves the overall stability and reproducibility of sensor responses. Moreover, the use of agricultural waste in nano-silica synthesis aligns with sustainable practices, contributing to reduced environmental impact compared to conventional synthesis methods. This review underscores the growing importance of electrochemical sensors in analytical chemistry and emphasizes the pivotal role of green synthesized nano-silica in advancing sensor capabilities. By highlighting its applications in detecting water pollutants, food dyes, and pharmaceuticals, the review aims to demonstrate the broad utility and potential impact of these sensors in improving public health, food safety, and environmental sustainability.

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